Science & Mathematics - 23 July 2007

2007-07-23 21:12:01 · 2 answers · asked by Anonymous in Chemistry

2007-07-23 21:08:51 · 2 answers · asked by Anonymous in Chemistry

is it true that the starts we see every night at sky r from the past? i mean they lived millions years ago ,maybe from the time of big bang?

please tell me some simple sites i can read more about that

thanks

2007-07-23 20:58:23 · 6 answers · asked by Anonymous in Astronomy & Space

2007-07-23 20:57:53 · 1 answers · asked by starchaser18 2 in Mathematics

just tonight i found this bug. i have looked on the internet for bugs in Oregon. but there not giving me very much info. on the types of bugs in Oregon. i know that some place knows all about the bugs and insects but i just don't know what to look for!
can u help me please?
oh.. and do hurry this is a cross between a beetle and a cockroach! ahhhhhhhhhh!

2007-07-23 20:57:35 · 1 answers · asked by shoppingreen 3 in Zoology

One minute or something before it starts to rain. How come?

2007-07-23 20:46:35 · 10 answers · asked by zoeksalamander 4 in Weather

2007-07-23 20:41:34 · 1 answers · asked by ameen m 1 in Medicine

2007-07-23 20:40:13 · 2 answers · asked by sha c 1 in Chemistry

im going to do a biology experiment soon..i wanna test how music can affect plant growth..
Im in Brisbane, Australia. it's about winter in here..so anyone can help me choose a plant type that can grow better and fast (like you can observe obvious growth in 4 weeks or so)in winter in Australia??

thanx a lot guys!!!

2007-07-23 20:07:54 · 2 answers · asked by simple_life1003 2 in Biology

Consider the initial value problem
dA/dt = kA, A(0) = A_0 (where '_' means subscript)
as the model for the decay of a radioactive substance.

(i) Show that, in general, the half-life T of the substance is
T = - ln 2 / k.
(ii) Show that the solution of the initial value problem in part (1) can be written as
A(t) = A_(0) * 2^(e*(-t / T)).
(iii) If a radioactive substance has the half-life T given in part (i), how long will it take an initial amount A_0 of the substance to decay to 1/8 A_0?

I am at a loss as to what to do for all parts of this question. If someone who knew how to do this, would maybe express their ideas (even solve the problem!!) - well that would be wonderful!!

Thank-you!

2007-07-23 20:01:19 · 3 answers · asked by David C 1 in Mathematics

The upper right-hand corner of a piece of paper 12 by 8 is folded over to the bottom edge. How would you fold it to minimize the length of the fold? Basically, what are the dimensions of the fold. How far from the corner down, or how far from the corner to the left should the fold be made. The right corner is supposed to just touch the bottom edge.

2007-07-23 19:57:15 · 1 answers · asked by p00n 2 in Mathematics

I don't know how to solve this problem...Thanks for the help!

2007-07-23 19:56:27 · 9 answers · asked by christopher G 1 in Mathematics

does anyone know what it might be like? i am getting different stories on this so i need to clarify it once and for all.
thanks !

2007-07-23 19:54:06 · 11 answers · asked by amirbahman 2 in Earth Sciences & Geology

I have seen nurses in an ICU setting caring for patients who have met brain death criteria and whose families want to donate. Transplant nurses (coordinators) then come in and do a lot of phoning and paperwork (after speaking with the loved ones), follow the body to the OR and fly all over the place. What exactly is the role of the transplant coordinator as a nursing position?

2007-07-23 19:25:16 · 2 answers · asked by Aiden 4 in Medicine

how does ampicillin cause black hairy tongue as one of its adverse effects....help please..........

2007-07-23 19:16:37 · 4 answers · asked by baby 1 in Medicine

2007-07-23 19:15:30 · 2 answers · asked by lrgoel2004 2 in Botany

three cards are drawn from a deck...what is the probability that u the second card is an ace without the first being showed to u

2007-07-23 19:13:03 · 5 answers · asked by ellie_2121 3 in Mathematics

Okay.
So i need a list of rift valleys in New Zealand?
It would be extremely useful
Thanks!

2007-07-23 19:08:25 · 3 answers · asked by Anonymous in Earth Sciences & Geology

if so, details?

2007-07-23 18:53:00 · 7 answers · asked by m$.ufMfet 2 in Medicine

1. The area of a rhombus is 7.5 sq. in. Find the length of the two diagonals if one of them is one more than twice the other. Explain it bro.

2. Below is a square split into four rectangular parts. The areas of two of the parts are provided. The lengths of the sides are whole numbers. Find the area of the entire square. Write a clear and concise explanation to justify your answer.

http://i49.photobucket.com/albums/f283/mystalkingshadow/06_04h_06a.gif



- ya it is school work no I cannot get the first one but they still are interesting questions though

2007-07-23 18:51:49 · 4 answers · asked by Anonymous in Mathematics

my nephew heard somewhere that there was a medical facility paying top dollar for testicles does anyone know of such a thing if so I have a couple candidates.

2007-07-23 18:47:21 · 6 answers · asked by Anonymous in Medicine

I have a friend who is short fused over alot of silly little things, is there any medication that really works. They have been on something before but not sure what it is. Any suggestions as far as medication. They have already tried therapy and anger managment. And there is no certain thing that trigures the anger.

2007-07-23 18:44:39 · 1 answers · asked by Nally25 3 in Medicine

http://outdoors.webshots.com/album/560001449ypkJFm

The shrub (in the photos at the link) is native or naturalized in Lewis County, Missouri (Northeast portion of the state). It is growing in a heavily forested area on Lindley Series soils. I'm assuming it's of the genus Viburnum based on close similarity to V. dentatum, and might have identified it as that were it not for the shape of the drupes (which are ripe as of now and a blue-black color), and possibly the hairs along the veins. The leaf shape also appears to be non-typical of what I have seen on V. dentatum. With me not being a botanist, my resources and abilities are limited on the subject. Judging from the limited number of good descriptions and photos available, V. bracteatum would be the closest I could find... but the distribution of that species makes that seem very unlikely to be the species I have found.

2007-07-23 18:43:34 · 3 answers · asked by Now and Then Comes a Thought 6 in Botany

2007-07-23 18:36:18 · 11 answers · asked by Danaus 1 in Zoology

jw

2007-07-23 18:23:36 · 3 answers · asked by bamlover® 2 in Zoology

How much is it worth when it is 10 years old?

2007-07-23 18:23:03 · 4 answers · asked by Mr. Al 2 in Mathematics

each page of a book will contain 30in^2 of print, and each page must have 2in margins at the top and bottom of the page. and 1 in margin on the left and right.
What is the minimum possible area of such a page?

2007-07-23 18:22:37 · 4 answers · asked by jenny 1 in Mathematics

Scientists claim that 98% of the universe was made after the 1st 3 minutes itself. It is also said that during the big bang, hydrogen was emitted in huge amounts, and due to its fusion, helium was also formed. However, can you tell me, how the heavier elements formed? what provoked such high temperature for their fusion?

2007-07-23 18:14:52 · 4 answers · asked by Kalpak I 2 in Astronomy & Space

Does an Arizona bark scorpion, which usually carries its tail held flat out to it's side, lift its tail above its back when threatened?

We get bark scorpions in our house with some frequency, and I am familiar with their appearance, but the other night I found a scorpion in my daughter's room that was on the large side and had its tail up over its back. Was this just a threatened bark scorpion, or a different species altogether?

2007-07-23 18:14:29 · 1 answers · asked by Pineapple Hat 4 in Zoology

EX: The half-life of the carbon 14 isotope is 5730 years. If there were 4 billion atoms of C14 in a particular organism at the time it died, how many atoms of C14 would there be in the remains of that organism 11,460 years after it died?

2007-07-23 18:05:00 · 2 answers · asked by noname 3 in Earth Sciences & Geology